Suction roll



' Jan. 29, 1929.

W. H. MILLSPAUGH SUCTION ROLL Filed July 24, 1925 2 Sheets-Sheet 1 0 0 0 0 0 0 0 0 0 o 0 0 o O 0 o o 0 0 0 0 0 0 0 u .0 0 0 O \I \I I \I t l Jan. 29, 1929.

w. H.- MILLSPAUGH SUCTION ROLL Filed July 24, 1925 2 Sheets-Sheet 2 llllll suction box. a

pasta Jan. 29, 19 9. UNITED ST A r-Es PATENT or 1,700,442 FICEI.

WI'LLIAM murtrsmuen, or sannusxv, 01110.-

SUCTION 1 ROLL.

Application filed m 24, 1925. Serial masses.

.The invention will be understood by reference to one illustrative embodimentthereof shown in the annexed drawings.

In said drawings: Y v

Fig: 1 is alongitudinal vertical sect on of one practicable type of suction roll embodying the invention. This section is taken on;the line 11 of Fig. 2, looking in the direction indicated by the arrows.

Fig.'2 is a cross section on the line 22 of Fig. 1.

Fig. 3 is a detail vertical section through one of the journal-supporting rollers.

The structure selected for illustration 1S a-suction roll of the general type disclosed in the Millspaugh reissued Patent No. 13,100 dated April 12, 1910, equipped with an nternal stationary suction box of thetype disdisclosed in the Millspaugh Patent No.

1,025,822, dated May 7, 1912. 0

' The rotating cylinder of said structure is designated in the drawings by'the reference numeral 1; and its stationary member or suction box is designated by the numeral 2:

The cylinder-i is represented as a metal shell rollers is shown in Fig. ,3. As shown, it

which is perforatedi or foram inousbetween its end portions, for a purpose whieh is well understood. The suction-box 2 is shown constructed with a trough-shaped upper portion having longitudinal packings 3 (Fig. 2) which bear against or coact with -the in terior surface of the cylinder, and having adjustable end packing heads 4. It is unsteel bands 8 shrunk or otherwise aflixed upon the cylinder, bear upon and are.supported by large surface-hardened'steel rollers, there being a pair of such rollers 9 and 10 for each cylinder journal (Fig. 2). Said rollers are shown as of large diameter in relation to the cylinder and arranged at such appropriate distances'at opposite sides of the vertical center of the cyllnder-as to afi'ord derstood that a vacuum'chamber 5 is thusprovided in the upper trough-shaped part of the suction-box, said chamber communicating through the central opening 6 with the interior o-f the main portion of the suction-box, as explained in said Patent 1,025 822. The ends of 'thesuction box are shown intriorly screw threaded at 7 for c0nnec-. L tion with pipes leading to-a vacuum pump.

Instead of mounting the cylinder in pedestal supports having annular bearings, as is the case of the structures shown""in the previously mentioned patents, the cylinder 1 of theillustrative structure 1s mounted by means such for example as shown in the drawings and now to be described. The cylinder journals, which in this instance are enlarged journals .provided'by hardened that the cylinder will rotate on the large supporting rollers which in turn rotate'on the an adequate supportingbearing for the cylinder.

Each pair of journal-supporting rollers 9 and 10 is carried by a saddle 11 which is desirably supported as hereinafer explained with capacity for a slight pivo al androcking movement to permitself-adjustment of the supports for aligning the 'ournaL-supporting rollers with the cylin er. In thespecific form shown, the saddles '11 comprise castings which are approximately T-shaped at the center, i. e. midway between the rollers, asshown in Fi 1, and which aresubstantially' U-shaped at the ends as shown in Fig. 3. By reference to Figs. 2 and 3 it will be seen that the rollers 9- and 10 are arranged between the vertical Walls12 of the U-shaped ends of the saddles, which walls are provided with substantial seats 13 for the roller shafts 14. 4 I

One of the individual journal-supporting comprises a thick annulus, "i. e. an annulus of large dimension between its mner and outer circumferences, ahd. contains ant1fr1ction bearings designated as a whole by the numeral 15. These bearings may comprise concentrlc race-rings and mterposed balls or rolling-elements, all of' hardened steel;

the outer race-rings of the bearin s being fitted securely in the roller 9, and t e inner and 10 3 at each end of the suction roll are equipped with such antifriction bearings,'so

annular series of rolling elements interposed between the interiors of the rollers and the shafts 14. Thus the cylinders may rotate "very freely and may be operated at high speeds with minimum consumption of power over that required to drive the cylinder past the arc o fvacuum. r j v I h the roller shafts 14 may each be provided.

rocking of the saddle, an

The shafts being comparatively short and' stationary, such slight shaft flexing as may occur under the load of the cylinder will be of negligible effect since it will have no tendency to set up crystallization such as would accompany the flexing of a loaded rotating shaft.

For lubricating the antifriction bearings,

as shown in dotted lines in Fig. 3 with an oil or grease passage 18 communicating with the roller chamber 'ntaining-the bearings. Lubricant may be sup lied by inserting the nipple 19 of a greaseorcing device into theend of the passage 18. j As before stated, the saddles 11 carrying the journal-supporting rollers are so mounted as to permit self-aligning off the rollers with the cylinder journals. For this pur-. pose, the bottom of each saddle may be formed as shown with a central projecting rest 20 and end rests 21 which are machined and bear'upon similar rests on base supports 22, which supports in-this instance are the bottoms of the housings 23. The rests are slightly relieved to permit slight lateral central pivot stud 24 swiv led in an opening in the base. Thus the supporting rollers will accommodate themselves to the cylinder journals. V J

The housings 23 may comprise metal castings of the general character shown in Fig. 2, and which ha bottoms to support the saddles, which of course could rest directly on machine rails on which the housings are mount ed. The housings when thus formed with bottoms are desirably provided with removable back walls 25 for'access to the bearings. Said housings 23 are constructed with their upper p0 -'ons of semi-circular form to receive the cylinder journals 8, there being clearance between said journals and the semi-circular upper' edges of the hous-- ing walls so as to avoid any frictional con-.

- tact. The housings are capped with semicircular caps '26 l 7 ing with the cylinder journals and secured in dotted lines covering but not contactto the housings by 'stud bolts 27 as shown in Fig. 1 and full lines in be observed thait these hou's-. caps 26 form separable sup- 7 7 andhousing structures which en- Esti ate supporting devicw F g-' It l or saddles 11 carrying the large journal-supporting rollers 9 and 10.

.Thus' the structures and semblance of ordinary pe -eeee wee the saddle has a toward in this instance are-.shown cylinder journals and contain the have the general form destal bear-' noted in the cylinder-journals are free of engagement with said structures or any fixed bearing surfaces and bear only on the antifriction-' ally journaled large rollers: 1 For supporting the suction housings, said housings are shown formed or constructed with the lower half-members 28 of clamp rings, the upper semicircular box 2 from the members 29 of Which are secured to said r lower members by stud bolts 30 shown in dotted lines in Fig. l1.. The clamps com.- posed of the members 28 and 29 embrace circular heads,or supports 31- in whichthe .ends of the suction box are guided for radial adjustment and supported on the springs 32 in the manner shown in the previously mentioned patents. It will be understood of I course that this specific construction is shown in view of havingillustrated the present invention in an embodiment comprising the particular type of suction roll structure described in said patents. 'With this construction, angular adjustment of the suction box is of course easily effected by loosening the bolts 30and angularlyadjust ing the heads 31 in the clamps 2829, which clamps and heads represent supporting nieans in which the ends of the suction roll cylinder are mounted. The general construction of the heads '31 and means of mounting the for the box carried by the structures suction box therein will be understood-by reference to said reissued Patent No. 13,100; the yieldingly-supported suction box ends being appropriately guided in diametric ways in the heads for radial play of the boxand from the interior of the cylinder, and the pressure of contact of the open face of the suction box with the interior surface of the cylinder being limited and.

regulated by adjustable stops represented by screws 33 carrie d by the heads The specific means stated is of course represen tative of any appropriate means for the purpose. The heads'31 are shown adjacent the ends of the cylinder, thus furnishing a.

means to preventendwise movement of the cylinder.

A driving spur gear 34 is shown secured -in' the cylinder at the right hand end in Fig. 1. .The particular arrangement illustrated is such that the driving gear 's lo cated between the cylinder journal-8 an I the corresponding head 31-, the clamp for which is correspondingly oifset from thehousing 23, Otherwise the construction at the drivar end of the suction roll is substanthe same.;as at the other end.

large solid roller 35 which bears of its own weight on the cylinder journal opposite the the roller 35 will resist any impulse ofthe In Fig. 2 there isshown a comparatively V Ill 50 rollers havin cylinder to unseat from its bearingvrollers under the initial impulse of the gear drive.

' Said roller 35 is shown housed in an e'xtension 36 of the cap 26. Said roller 35 may ,Bihave slight, play radially'of the suction roll cylinder, as for instance bymounting its shaft in appropriate slotted bearings. It will be understood that such a roller may be provided at each end of the suction roll 1 structure.

There is shown inFig. 2 an oil receptacle 37 on the upperside of the cap 26, which supplies oil to the cylinder journal. In view of the fact that the cylinder journal is freefrom contact with ordinary bearing surfaces, and is only in rolling contact with the large supporting rollers 9 and 10, which are antifrictionally mounted on lubricated ball or roller bearings, no lubrication of the cylinder journals is needed for the ordinary purpose of lubrication, i. e. to reduce friction between engaging surfaces. The present inventor has, however, discovered that in practice a certain wear of the surfaces of the cylinder journals and supporting rollers takesplace by the rolling contact of these surfaces under load of the cylinder, and presumably by slight slippage. cordin ly desirable tosupply oil to the journa s as indicated, or to the surface of one of the journal supporting rollers, so that a film of oil will form bet een the several surfaces in rolling conta t and thereby avoid the wear alluded to. The oil may be 3 fed by wick 38 lapping the surface to which it is directly applied, in this instance the journal.

Obviously .the present invention is not limited to the specific'embodiment thereof herein 40 shown and described. Features thereof may beadvantageously used in various different combinations and sub-co'mbinationsf The suction roll may of course be used for other purposes, e. g. for application of pressure instead of vacuum.

I claim as my invention:

. 1.-A suction-roll comprising, in combi nation, a rotating cylinder; a 'paratively larj e antifrictiona y, mounted of the cylin er; antifriction bearings for said 'rollers;t-lie cylinder being supported wholly by said antifrictionally mounted rollers and free of contact with other bear- 5 ing surfaces; a box cooperating with the cylinder; and means sup ortingthe box inoperative relation with t e cylinder.

2. ,A suction-roll comprising, in; combi -.nation, acylinder and. box cooperating therewith; box supporting means; a pair of large antifr'ictionally mounted rollers supporting each end of the cylinder; and saddles carrying said, rollers; said saddles adjustably vmounted togpermit self-alignment of the rollers with thecylin'der.

It is ac-,

Hair of comroad treads under each end surfaces; antifrictionally.

tion, a cylinder and box cooperating therewith; box supportin means; and rollers on which the cylinder ears,lsaid. rollers having antifriction bearings and mounted topermit self-alignment of the rollers with the cylinder.

5. A suction-roll comprising, in combination, a c linder, end standards in which the cylin er is mounted, said standards free of engagement with the cylinder journals; antifrictionally mounted rollers associated with said standards, on which rollers the cylinder journals bear in rolling contact;

and means supported by said standards comprising means yieldingly orcing the box toward or in contact with the cylinder and adjustable means limiting the pressure ofcontact. j V

6. A suction-rollcomprising in combination, a cylinder; a box cooperating there with; hollow end standards in which the cylinder is mounted; said standards having semi-circular edges close to but out of contact with the lower half of the cylinder; antifrictionally mounted rollers housed in said standards, on which rollers the cylinder bears; and means supported from said standards carrying the box.

- 7. A suction-roll comprising, in conibination, an open-ended cylinder having journals of a diameter as great as that o the cylinder; large antifrictionall-y mounted rollers on which the cylinder journals bear in rolling contact, yieldingly mounted rollers cooperating with said cylindento prevent unseating of the journals from said first mentioned rollers; and a suction box supported in cooperative relation with the cy inder. I

8. suction-roll comprising, in combination, a c linder and cooperating box; end standards h caps pformin separable structures ha ing the general orm and semblance of pedestal bearings and enclosing the cylinder journals but clear ofcontact'wit-h said journals; and

' .anti frictionally mounted rollers associated which the cylinder with said standards on journals bear. 1

9. A suction-roll comprising, in combination, a cylinder and cooperating box; end

standards having caps; said standards and caps forming -separable structures enclosing the cylinder journals; antifrictionally mounted rollers associated with said standaving caps; said standards and its supporting rollers.'

ards on which'the cylinder journals bear;

and means carried by said caps cooperating with the cylinders to prevent unseating from 10. A suction-roll comprising, in combination, a cylinder and cooperating box;

end standards having caps; said standards and caps forming separable structures enclosing the cylinder journals; a pair of anti-- frictionally mounted rollers supporting each cylinder journal; and saddles associated with said standards, each carrying a said pair of v rollers.

torated cylinder, supporting standards 'un- 11. In a structure ofthe class described, the combination with the cylinder, oia pair of antifrictioiially journalled rollers supporting an end of the cylinder; a saddle carrying said rollers; and a housing ,in which the saddle rests; whereby the rollers maybe assembled and removed as a unit.

12. Ina structure of the class described,

the combination with the cylinder, of a pair of antifrictionally journaled rollers supporting anend of the cylinder; a saddle carrying said rollers; said saddle mounted witliv capacity to pivot and tilt to render the rollers self-adjusting to the cylinder.

k ,'13. A structure of the class described having, in combination with the rotating perprovided with bearing surfaces for the cylinder; caps aflixed to said standards; said standards and caps forming se arable structures enclosing end portions 0 the cylnder;

and rollers housed in said standards on. Whichthe cylinder has its bearings.

14. A structure of the class described having, in combination with the rotating perforated cylinder, supporting standards unprovided with bearing surfaces for the cylinder; caps affixed to said standards; said standards and caps forming separable strucstandards to prevent longitudinal displace- .ment of said cylinder; and means carried by said caps cooperating with the cylinder to prevent unseating thereogfrom said supporting rollers.

15. In a structure of theclass described,

the combination with the cylinder, of supporting standards therefor unprovided with bearing surfaces for said cylinder; and selfadjusting means carried by said standards for antifrictionally mounting the cylinder.

In testimony name to this specification.

.tures enclosing end portions of the cylinder; 1 supporting rollers for the cylinder mounted in said standards; means carried by said whereof, I have signed n rmmsP'AUenc 

